I never understood a developer’s obsession with “their way” but anyways. Thunar is a good light file manager that has one issue, it insists on displaying a warning when being used as root that cannot be turned off. Well I run my personal laptop as root and I don’t really care what others think about it and why it might be a bad thing(TM).
In order to remove the damn warning you need to grab everything needed to rebuild the package from:
OR simply clone the git repo and build there.